package drds.server.sqlparser.sqlobject.expression;

import drds.server.sqlparser.visitor.Visitor;

/**
 * 
 * @author 曹正辉<330937205@qq.com>
 * 
 */
public class AllColumn extends AbstractExpression {

	public AllColumn() {

	}

	protected void accept0(Visitor visitor) {
		visitor.visit(this);
		visitor.endVisit(this);
	}

	public void output(StringBuffer sb) {
		sb.append("*");
	}

	public int hashCode() {
		return 0;
	}

	public boolean equals(Object o) {
		return o instanceof AllColumn;
	}
}
